During which of piaget's stages does a person develop an awareness that things continue to exist even when they are not perceived?

Sensorimotor                            

Explanation:

Sensorimotor stage: In psychology, the term sensorimotor stage is considered to be a part of the cognitive development theory which was given by a famous psychologist named Jean Piaget.

The sensorimotor stage is the first stage in the theory of cognitive development and starts from the birth of a child and lasts through two years of age. In this period, a child learns to interact with the world around him or her by using his or her senses. The child generally relies on sucking, touching, feeling, and seeing to know about the surroundings.

In the question above, the given statement signifies the Piaget's sensorimotor stage.

this headline suggests that midterm congressional   elections are at the corner and trump administration wants to activate his base by vowing to clamp down on immigrants and immigration as trump had said during his election campaign around two years ago. when a baby is born in usa, the baby becomes citizen of usa for 85 years and trump wants to end this rule of birthright citizenship to control illegal immigration and this what he said in an interview""we’re the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the united states for 85 years, with all of those benefits,” "